package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.utils.HttpUtils;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberResponseVo;
import com.atguigu.gulimall.auth.fegin.MemberFeignService;
import com.atguigu.gulimall.auth.vo.SocialUserVo;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;

import static com.atguigu.common.constant.AuthServerConstant.LOGIN_USER;

/**
 * @author lk
 * @version 1.0.0
 * @Description 处理社交登录请求
 * @createTime 2024/2/1 21:45
 */
@Controller
@Slf4j
public class OAuth2Controller {

    @Autowired
    MemberFeignService memberFeignService;
    /**
     * 授权登录成功的页面回顾
     * @param code 授权码
     * @return String
     * @throws Exception
     */
    @GetMapping("/oauth2.0/weibo/success")
    public String weibo(@RequestParam("code") String code, HttpSession session) throws Exception {
        // 1.根据登录微博返回的code换取accessToken
        Map<String, String> headers = new HashMap<>();
        Map<String, String> querys = new HashMap<>();
        querys.put("client_id","4100914652");
        querys.put("client_secret","b16c2a454a1b4209b26b90fbc7c99148");
        querys.put("grant_type","authorization_code");
        querys.put("code",code);
        querys.put("redirect_uri","http://auth.gulimall.com/oauth2.0/weibo/success");
        Map<String, String> body = new HashMap<>();
        HttpResponse response = HttpUtils.doPost("https://api.weibo.com", "/oauth2/access_token", "post", headers, querys, body);
        if(response.getStatusLine().getStatusCode() == 200){
            //获取响应状态码。200则成功
            //获取accessToken
            String json = EntityUtils.toString(response.getEntity());
            SocialUserVo socialUserVo = JSON.parseObject(json, SocialUserVo.class);
            //知道了哪个社交用户
            //1）、当前用户如果是第一次进网站，自动注册进来（为当前社交用户生成一个会员信息，以后这个社交账号就对应指定的会员）
            //登录或者注册这个社交用户
            System.out.println(socialUserVo);
            //调用远程服务
            R oauthLogin = memberFeignService.oauthLogin(socialUserVo);
            if(oauthLogin.getCode() == 0){
                MemberResponseVo memberResponseVo = oauthLogin.getData("data",new TypeReference<MemberResponseVo>(){});
                log.info("登录成功：用户信息：{}",memberResponseVo.toString());
                //1、第一次使用session，命令浏览器保存卡号，JSESSIONID这个cookie
                //以后浏览器访问哪个网站就会带上这个网站的cookie
                //TODO 1、默认发的令牌。当前域（解决子域session共享问题）
                //TODO 2、使用JSON的序列化方式来序列化对象到Redis中
                session.setAttribute(LOGIN_USER,memberResponseVo);
                //2、登录成功跳回首页
                return "redirect:http://gulimall.com";
            } else {
                return "redirect:http://auth.gulimall.com/login.html";
            }
        } else {
            //返回首页
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }
}
